On June 3rd at 02:40:12 Pacific Daylight Time (09:40:12 UTC), a very bright
fireball detonated over Washington state. Hundreds of eyewitness accounts have
poured in with various institutions. Some of the eyewitness reports, as compiled
in a newsitem by the Seattle Times, can be found here.
and a similar compilation by the Bremerton Sun can be found here.

"screencapture of the moment of the massive flare, from Ed Majdens all sky
video record from Courtenay, Canada (see below). The very bright light on the down left side
almost at the horizon is the fireball. Image courtesy
Ed Majden, MIAC"

A strong sonic boom rattled windows in a wide area around the point of
detonation. Many people thought an earthquake was in progress.

Video images & seismic data

The Sandia All-Sky fireball video camera operated by Ed
Majden of the Canadian MIAC
captured the fireball low at the eastern horizon from Courtenay, Vancouver
Island, Canada. The spectacular video shows a slow fireball detonating in a very
impressive flare. The magnitude of the flare is such, that it is possible that
the object completely disintegrated at that time. Further analysis of all
available data should shed some light on this. There are some attempts done to
try to recover possible meteorites in the area around Snohomish by various
groups and individuals. An early report on an impact near Chehalis, was later
shown to be a hoax.

We do not exclude the possibility that meteorites survived, but do note that
the massive flare might indicate that the object completely disintegrated. It is
very well possible that nothing survived.

The sonic booms have been registered by several seismographs of the Pacific
Northwest Seismograph Network (PNSN). In a June 3 press release (see the
link) William P. Steele, coordinator of the Pacific Northwest Seismograph
Network, and Stephen D. Malone place the detonation of the fireball at 43 km
altitude in the neighborhood of Snohomish, Washington state.

No satellite decay

We can exclude that this was a satellite decay. Ed Majdens' video from
Courtenay shows the object moving too fast for that. Moreover, checking with NASA
OIG revealed no suitable decay candidates near this date. The unmanned
Progress M1-11 spacecraft, on its return from the International Space Station,
made a controlled decay on June 3rd but did not come near the location of the
June 3rd fireball at all.